ZURICH — Italian Prime Minister Mario Monti will set the tone for beleaguered business and political leaders gathering in Davos this week for the annual World Economic Forum, with a speech titled “Leading Against the Odds.”

The powwow will bring together more than 1,500 business leaders and up to 50 heads of state or government, many of them, like Monti, weathered by almost perpetual crisis as they fight to bring their economies and companies through global financial turmoil and a few homegrown scandals of their own.

“It’s very clear that the future of the world economy is based on restoring trust. Restoring trust in leaders, restoring trust in our future. And this means we have to move out of this crisis mode,” WEF founder Klaus Schwab told a news conference.

There’s still some way to go, according to a survey by global public-relations firm Edelman published Monday.

“There is an incredible lack of trust in leadership,” said Richard Edelman, the firm’s president and chief executive. “Levels of trust in governments are worse than for business, but they are both terrible.”

Edelman’s annual survey across 26 countries did show a rise in trust in business and government over the previous year, but only 26 percent trust business leaders — and 15 percent for government leaders — to solve social issues.

Nineteen percent expected business to make ethical decisions, while 14 percent said the same for politicians.

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